Are the terms sufficiently broad that you might consider that it (somehow) covers, say, dual-stack lite? If so, I'd think at least an IPR is in order.
(note: I've only taken a cursory glance at a USPTO diagram while very sleepy so perhaps the comment is irrelevant) On Tue, Nov 4, 2008 at 5:34 AM, Pascal Thubert (pthubert) <[EMAIL PROTECTED]> wrote: > Hi: > > We just got that patent issued about one of the possible mechanisms to > implement a carrier grade NAT. > > Our patent is pretty much equivalent to tunneling to the carrier NAT > over IPv6 though it does/undoes NAT-PT instead of tunneling so we do not > have to define tunnels in the first place. > > In our patent, the home gateway has a proverbial /96 prefix that it > prepends to the IPv4 private address to form the IPv6 address of the > node. This is an automatic (stateless) operation that we (used to?) > support in IOS and the transport/payload is not modified. The Carrier > grade NAT undoes the NATPT, extracts that IPv4 private address and then > acts as a standard IPv4 NAT, though it saves the /96 prefix in the NAT > states to reconstruct the IPv6 address on the way back. You moght see > that as a NAT_PT +NAT operation back to back. > > Benefits for cisco are: > - Easier of implementation on the gw (no tunnel, stateless operation) > - Easier of implementation on the Carrier NAT (no tunnel, mostly > NAT+NAT_PT back to back) > > Since carrier class NATs seem pretty hot at the moment, the advice I'm > seeking is: > - should we draft that to the IETF? > - if not should we mention our IPR against an existing draft? > > Thanks, > > Pascal > >>-----Original Message----- >>From: patent-administrators(mailer list) >>Sent: mardi 4 novembre 2008 14:14 >>To: Patrick Wetterwald (pwetterw); Pascal Thubert (pthubert) >>Cc: Laurie Mintz (lamintz) >>Subject: [CPOL 443213] "Arrangement for reaching IPv4 public network > nodes by a node in a IPv4 >>private network via an IPv6 access network": has issued as US Patent > No. 7,443,880 >> >>Congratulations! >> >>US Patent # 7,443,880 entitled 'Arrangement for reaching IPv4 public > network >>nodes by a node in a IPv4 private network via an IPv6 access network' > was >>issued on 28-Oct-2008. Thank you for your support of Cisco's patent > program. >> >>As part of Cisco's patent award program, active/regular employees are >>entitled to receive a monetary award and a patent plaque. Please check > CPOL >>to view the status of your award. Details regarding the patent award > policy >>are at > http://wwwin-eng.cisco.com/pcb/cpol/patent.cgi?task=Help&hsecn=Awards >> >>As part of our ongoing effort to improve the quality of our patent > portfolio, >>Cisco periodically requires that you provide us with feedback regarding > the >>status of your inventions and any products that might incorporate them. > If >>you have not already done so, please visit the URL below and complete > the >>short questionnaire regarding this CPOL record. NOTE THAT THE ISSUANCE > AWARD >>PAYMENT IS CONTINGENT UPON YOUR COMPLETION OF THIS QUESTIONNAIRE: >> >>http://wwwin-eng.cisco.com/pcb/cpol/patent.cgi?task=StatusUpdate&patent > _p=443213 >> >>If this patent is necessary to implement a current or proposed > standard, >>please visit the Cisco Standards Registration Tool, >>http://wwwin-eng.cisco.com/pcb/standards/csrt.cgi, to ensure that the > related >>contribution is registered and associated with this patent. Failure to >>disclose standards activity related to a patent in a timely fashion may >>result in forfeiture of award. >> >>Thank you for your assistance. >> >>Cisco Patent Team >> >> >> >>----------------------------------------------------------------------- > ------ >>This e-mail was generated by CPOL v2.7.54. To reach CPOL > administrators >>please use the Contact form. >> >>For patent idea details: >>http://wwwin-eng.cisco.com/pcb/cpol/patent.cgi?task=PatDetails&patent_p > =443213 >> >>Contact URL: >>http://wwwin-eng.cisco.com/pcb/cpol/patent.cgi?task=Feedback >> >>Committee: CMSG >>PortMgr: lamintz >> >>All notes, comments and other information herein constitute Cisco >>confidential information and may be privileged communications to or > from one >>or more attorneys and/or supporting personnel for purposes of obtaining > or >>facilitating legal advice and/or legal services. >> *** CISCO CONFIDENTIAL *** > > -------------------------------------------------------------------- > IETF IPv6 working group mailing list > ipv6@ietf.org > Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 > -------------------------------------------------------------------- > -------------------------------------------------------------------- IETF IPv6 working group mailing list ipv6@ietf.org Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
